XML 44 R31.htm IDEA: XBRL DOCUMENT
v3.25.1

REVENUE RECOGNITION - Narrative (Details) - USD ($) $ in Billions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Revenue from Contract with Customer [Abstract] |  |
Revenue recognized that was previously deferred | $ 4.1 | $ 3.9
Cash sales of mileage credits | $ 1.9 | $ 1.8
Redemption period for majority of new miles (in years) | 2 years |

X
- Definition Mileage Credit Redemption, Majority Of New Miles Redemption Period + References No definition available. + Details
Name: | dal_MileageCreditRedemptionMajorityOfNewMilesRedemptionPeriod
Namespace Prefix: | dal_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sales Of Mileage Credits + References No definition available. + Details
Name: | dal_SalesOfMileageCredits
Namespace Prefix: | dal_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration